JP2023532351A - Network access method, media gateway, electronic device and storage medium - Google Patents

Abstract

Embodiments of the present application disclose a network access method, a media gateway, an electronic device and a storage medium in the field of communications. The network access method of the present application is applied to a media gateway to establish a private media channel between a user side and a target platform, and bind the private media channel with a user public network transmission resource after NAT conversion on the user side. , obtaining a media link between the user side and the target platform, and causing the target platform to conduct media communication with the user side via the media link. [Selection drawing] Fig. 1

Description

This application is filed on the basis of a Chinese patent application with application number "202010607277.6" and filed on June 29, 2020, claims priority to the Chinese patent application, and the full text of the Chinese patent application is incorporated herein by reference.

TECHNICAL FIELD Embodiments of the present application relate to the field of communications, and more particularly to network access methods, media gateways, electronic devices and storage media.

With the constant development of computer Internet technology, peer-to-peer (“P2P” for short) communication is becoming more and more popular. Network Address Translation (“NAT” for short) equipment has been widely used to alleviate the network address shortage problem of IPv4 before IPv6 became widespread. With NAT equipment, direct communication between nodes in different intranets is difficult, which greatly limits the development of P2P applications. NAT traversal technology allows nodes in different intranets to communicate directly by some technical means. Common NAT traversal techniques include NAT Session Traversal Utilities for NAT ("STUN" for short), Traversal Using Relays around NAT ("TURN" for short) techniques, etc. There is

However, current STUN traversal technology does not support symmetric NAT type traversal and is of limited use. On the other hand, TURN requires installation of additional equipment such as a TURN server, which leads to an increase in network cost and a decrease in scalability.

According to an embodiment of the present application, there is provided a network access method applied to a media gateway, said network access method comprising: establishing a private media channel between a user side and a target platform; Bind with the user public network transmission resource after NAT conversion on the side, obtain a media link between the user side and the target platform, and allow the target platform to conduct media communication with the user side through the media link.

According to an embodiment of the present application, there is further provided a network access method applied on the user side, wherein the network access method runs a default browser and communicates with the signaling gateway through the browser, or the user side communicating with a media gateway via a browser; establishing real-time media communication via a browser with a free agent on the target platform once the media link between the user side and the target platform has been established; ,including.

Embodiments of the present application further provide a media gateway. The media gateway comprises at least one processor and a memory communicatively coupled to the at least one processor, the memory storing instructions executable by the at least one processor, the instructions being executed by the at least one processor. can execute the network ax method applied to the media gateway by the at least one processor.

Embodiments of the present application further provide an electronic device. The electronic device includes at least one processor and a memory communicatively coupled to the at least one processor, the memory storing instructions executable by the at least one processor, the instructions being executed by the at least one processor. to enable the at least one processor to perform the network ax method at the user side.

Embodiments of the present application further provide a computer-readable storage medium, said computer-readable storage medium storing a computer program, which, when executed by a processor, implements the network access method described above.

One or more embodiments are illustratively illustrated by corresponding images in the accompanying drawings, and these illustrative descriptions do not constitute limitations on the embodiments.

3 is a flow chart of a network access method in the first embodiment of the present application; FIG. 4 is a flow chart of a network access method in the second embodiment of the present application; FIG. FIG. 8 is a schematic interaction diagram of a network access method in the third embodiment of the present application; FIG. 12 is a schematic diagram of the configuration of a media gateway according to the fourth embodiment of the present application; FIG. 11 is a schematic diagram of the configuration of an electronic device according to a fifth embodiment of the present application;

In order to make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below in combination with the accompanying drawings. However, those skilled in the art can appreciate that, in each embodiment of the present application, many technical details are presented in order to help the reader to better understand the present application. However, the technical solution for which this application seeks protection may be implemented without various changes and modifications based on these technical details and each of the embodiments below. The division of each of the examples below is made for convenience of explanation and should not constitute any limitation to the specific embodiments of the present application, which embodiments may be combined or referred to each other unless inconsistent. can be

It is an object of embodiments of the present application to provide a network access method that reduces the cost of network deployment and reduces the difficulty and cost of deployment for NAT traversal without deploying additional equipment.

A first embodiment of the present application relates to a network access method, the flow of which is shown in FIG.

At step 101, a private media channel is established between the user side and the target platform.

In step 102, bind the private media channel with the user public network transmission resource corresponding to the user side, obtain a media link between the user side and the target platform, and allow the target platform to communicate with the user side and the media via the media link. A user public network transmission resource is a transmission resource obtained by converting a local transmission resource on the user side by a network address translation NAT device.

Compared with the prior art, according to the embodiments of the present application, the media gateway establishes a private media channel between the user side and the target platform, and the private media channel and the user public network transmission resource corresponding to the user side. to obtain a media link between the user side and the target platform, so that the target platform conducts media communication with the user side through the media link, and the media gateway binds the user public network transmission resources and the private media By binding the channel, the target platform can know the user public network transmission resources of the user side and can send data to the user side via the media link. In media communication, in order to transfer media data, it is usually necessary to set up a media gateway, through which additional equipment is placed by establishing a media link for the user side and the target platform. No need to change the network configuration, reduce the difficulty and cost of network deployment, and the user side has corresponding user gateway transmission resources, that is, the user side has independent public transmission Having the resources, even if the user side is in a NAT symmetric network, it can lift the restrictions when the user side accesses the network by obtaining the media link and communicating.

The second embodiment of the present application relates to a network access method applied on the user side, the flow of which is shown in FIG.

At step 201, run the default browser and communicate with the signaling gateway or media gateway via the browser.

At step 202, once the media link between the user side and the target platform has been established, establish real-time media communication with a free agent of the target platform via a browser.

According to the network access method provided by this embodiment, the default browser is executed to realize communication with the signaling gateway through the browser or communication with the media gateway through the browser, and the user side and the target can communicate with each other. Establishing real-time media communication with a free agent on the target platform through a browser, after completing the establishment of a media link with the platform, and using a specific application or a specific component to achieve access to the network. Since there is no need to install, it reduces the cost of real-time media communication with the target platform and the limitation in real-time media communication, and expands the use range of real-time media.

For better understanding of the first and second embodiments, the following third embodiment details the specific process of the network access method in conjunction with FIG. 3, which is a schematic interaction diagram of network access. to explain.

The user side performs step S11 of sending user media negotiation information on the user side to the signaling gateway.

Specifically, the user side can be a smart phone, a personal computer (PC), a PAD, a VR device, or the like. In this embodiment, the equipment involved in the process of user side accessing the network includes a signaling gateway, a media gateway, a user side and a target platform, wherein the signaling gateway is communicatively connected to the media gateway; A media gateway is communicatively connected to the target platform. Target platforms include services with different functions, such as media servers and other service servers.

In this embodiment, the user side runs the default browser and communicates with the signaling gateway through the browser, or the user side communicates with the media gateway through the browser and the Establish real-time media communication with a free agent on the target platform via a browser once the media link has been built.

Specifically, the default browser's server is located in a public network, and the browser is used to provide call services on the user's side and assist in NAT traversal on the user's side. The browser's server establishes a heartbeat connection with the signaling gateway so that the browser is ready to communicate with the signaling gateway. The user side runs this browser, and the server of the browser provides the presentation page to the terminal. The user can manipulate this presentation page to trigger the browser to initiate a real-time media call to the media server, where the signaling gateway can be a real-time media signaling gateway. . For example, the page presented to the user may display a call control, and the user may click on the control to trigger the browser to initiate a real-time media call to the media server, but the browser may also , other methods of initiating a real-time media call may also be provided and are not listed in this embodiment.

After the browser initiates a real-time media call, the browser obtains user media negotiation information on the user's side and sends a media negotiation request to the media server. User media negotiation information includes user-supported media capabilities and parameter information, where user-supported media capabilities are user-supported media types, e.g. video media type, audio media type, etc., and the parameter information is sampling rate, resolution, etc., for example. The user side sends user media negotiation information to the signaling gateway through the browser.

In particular, the user side runs a browser, the browser makes real-time media calls, and the browser does not need to download, thus achieving the purpose of accessing the media server at any time.

Of course, the user side can also initiate media negotiation with the media gateway via a specified application.

The signaling gateway performs step S12 of sending user media negotiation information to the media gateway.

The media gateway performs step S13 of forwarding the user media negotiation information to the target platform according to the user media negotiation information on the user side sent from the signaling gateway.

The media gateway performs step S14 of forwarding the target media negotiation information to the signaling gateway according to the target media negotiation information sent from the target platform.

Specifically, when the media server in the target platform receives the user media negotiation information, it sends the media server's target media negotiation information to the media gateway, and the target media negotiation information includes the media capabilities and media capabilities that the media server supports. parameter information. The media gateway sends this target media negotiation information to the signaling gateway.

The signaling gateway performs step S15 of sending target media negotiation information to the user side to complete the media negotiation between the user side and the target platform.

The user side receives the target media negotiation information transferred from the signaling gateway through the browser and implements media negotiation with the target platform.

The media gateway performs step S16 of establishing a private media channel between the user side and the target platform.

In one example, a target platform is assigned a target private media communication port, a user side is assigned a user private media communication port, a mapping relationship is established between the target private media communication port and the user private media communication port, and a private media channel is established. to form

Specifically, after the user side completes the media negotiation with the target platform, the media gateway establishes a call session, assigns the target private media communication port to the target platform, and assigns the user private media communication port to the user side. The target private media communication port may be the media communication UDP port assigned by the media gateway to the media server, and the user private media communication port may be the media communication UDP port assigned by the media gateway to the user side. The media gateway establishes a mapping relationship between the target private media communication port and the user private media port to form a private media channel. For example, the media gateway can allocate a media communication UDP port on the user side in real time, noted as port1, and a media communication UDP port on the target platform's media server, noted as port2, where port1 and port2 , and the mapping relationship is associated with the created session. Further, when conducting this session, data sent from the media server will flow into port2 and flow out of port1 according to the mapping relationship.

The user side performs step S17 of sending NAT data packets to the media gateway.

Specifically, the NAT data packet can be a STUN data packet, and the user side sends the STUN data packet to the media gateway through the browser, so that the media gateway can acquire the user public network transmission resource on the user side. make it The user public network transmission resource includes a NAT public network address and a NAT public network media port corresponding to the NAT public network address.

In addition, when the user side itself is in the internal network and the user side accesses the public network, the private network address is converted to the public network address of the NAT device and the public network port of the NAT device through the NAT device, and the public Access the public network through the network address and public network port of the NAT device. The NAT public network address in this embodiment is the public network address after translation by the NAT device and the public network port after translation of the private network address on the user side.

The media gateway acquires the NAT public network address and the NAT public network media port according to the NAT data packet sent from the user side, and returns the NAT public network address and the NAT public network media port to the user side step S18. to run.

Specifically, due to the complexity of the network environment, the user side may be in various network environments. If you are behind two levels of NAT equipment, you access the public network through the NAT equipment, and the user side needs to do real-time media communication, you need to do NAT traversal, that is, the user side needs to You need to know your public network address and port.

When the media gateway receives the NAT data packet sent from the user side, it can obtain the NAT public network address and the NAT public network media port to the user side. returning the NAT public network address and the NAT public network media port of the user side to the user side, and upon receiving the NAT public network address and the NAT public network media port, the user side transmits and receives media packets to and from the media server; It can be carried out.

The media gateway performs step S19 of binding the NAT public network media port and the user private media communication port to form a media link.

Specifically, it binds the NAT public network media port and the user private media communication port to form a media link. The media link is: user side private network media port→user side NAT public network media port→user side private media communication port→target private media communication port→media server media port.

Using the media link, the media server can transmit media data to the user side and realize real-time media communication with the user side.

The user side performs step S20 to initiate dtls negotiation with the media gateway.

The media gateway executes step S21 of performing dtls negotiation with the user side in response to the data packet transport layer security protocol dtls negotiation request sent from the user side.

Specifically, in order to ensure the security of the media link, the user side sends a data packet transport layer security protocol dtls negotiation request to the media gateway, and the data packet transport layer security protocol dtls sent from the user side According to the negotiation request, it performs dtls negotiation with the user side, realizes the encryption function for the media link, and provides security for the media link.

A media link is like the bold double-headed arrow in FIG. 3, and once the media link is established, the target platform initiates a call to the user's side and waits for an available agent.

Specifically, once the media link is established, the business service center of the target platform initiates a Session Initiation Protocol (SIP) call to the user side and waits for the available agent. The user side establishes a real-time media call with a free agent over the media link in response to the SIP call.

According to the network access method of this example, a media link is established between the user side and the target platform via a media gateway, and when the media link is established, the media link is encrypted to ensure the security of the media link. improve. In addition, the user side can establish a media link by running a browser and communicating with the media gateway, so the user does not need to download any additional application programs on the user side. To reduce the cost of real-time media communication and improve the usage scene of real-time media communication by enhancing the portability of the browser.

Those skilled in the art will appreciate that the above step division of the various methods is merely for clarity of explanation and may be combined into one step or subdivided some steps into multiple steps during implementation. and both fall within the scope of protection of the present application as long as they contain the same logical relationship, without changing the core design of the algorithm or process, and are not material to the algorithm or process. It should be understood that any modification or introduction of insignificant design will fall within the scope of protection of the present application.

A fourth embodiment of the invention relates to a media gateway. The configuration includes at least one processor 401 and a memory 402 communicatively connected to the at least one processor 401, and instructions executable by the at least one processor 401 are stored in the memory 402, as shown in FIG. The instructions stored and executed by the at least one processor 401 enable the at least one processor 401 to perform the above network access method.

A fifth embodiment of the present invention relates to an electronic device. The configuration includes at least one processor 501 and a memory 502 communicatively connected to the at least one processor 501, and instructions executable by the at least one processor 501 are stored in the memory 502, as shown in FIG. The instructions stored and executed by the at least one processor 501 enable the at least one processor 501 to perform the above network access method.

Here, the memory and processor are connected in a bus fashion, the bus may include any number of interconnected buses and bridges, and the bus brings together the various circuits of one or more processors and memory. Connected. The bus can also connect together various other circuits, such as peripherals, voltage regulators, and power management circuits, which are well known in the art and will not be discussed further herein. do not. A bus interface provides an interface between the bus and the transceiver. A transceiver may be a single element or multiple elements, such as multiple receivers and transmitters, and provides a means for communicating with various other devices over a transmission medium. Data processed by the processor is transmitted over a wireless medium via an antenna, which also receives data and transmits the data to the processor.

Besides being responsible for bus management and normal processing, the processor may also provide a variety of functions including timing, peripheral interfacing, voltage regulation, power management, and other control functions. Memory, on the other hand, may be used to store data used in performing operations by the processor.

A sixth embodiment of the present application relates to a computer-readable storage medium storing a computer program. The computer program, when executed by the processor, implements the above network access method embodiments.

That is, those skilled in the art will understand that implementing all or part of the steps in the methods of the above embodiments can be realized by instructing relevant hardware by a program. This program is stored in one storage medium and causes one device (may be a one-chip computer, chip, etc.) or processor to execute all or part of the steps of the method of each embodiment of the present application. Contains several directives for On the other hand, the storage medium includes USB memory, removable hard disk, read-only memory (ROM: Read-Only Memory), random access memory (RAM: Random Access Memory), magnetic disk, optical disk, and various other media capable of storing program code. Including media.

It will be understood by those skilled in the art that each of the above examples is a specific example for carrying out the present application, and that in actual application, modifications can be made in form and detail without departing from the spirit and scope of the present application. It can be understood that various changes can be made to

Claims (10)

A network access method applied to a media gateway, comprising:
establishing a private media channel between the user side and the target platform;
binding the private media channel with a user public network transmission resource corresponding to the user side, obtaining a media link between the user side and the target platform, wherein the target platform communicates with the user via the media link; a step of performing media communication with a user side, wherein the user public network transmission resource is a transmission resource obtained by converting a local transmission resource of the user side by a network address translation NAT device;
network access methods, including The step of establishing a private media channel between the user side and the target platform comprises:
assigning a target private media communication port to the target platform and assigning a user private media communication port to the user side;
establishing a mapping relationship between the target private media communication port and the user private media communication port to form the private media channel;
The network access method of claim 1, comprising: the user public network transmission resource includes a NAT public network address and a NAT public network media port corresponding to the NAT public network address;
binding the private media channel with a user public network transmission resource corresponding to the user side, obtaining a media link between the user side and the target platform, wherein the target platform communicates with the user via the media link; The step of bringing into media communication with the
3. The network access method of claim 2, comprising binding the NAT public network media port and the user private media communication port to form the media link. Before binding the NAT public network media port and the user private media communication port to form the media link, the method comprises:
obtaining the NAT public network address and the NAT public network media port according to the NAT data packet sent from the user side;
returning said NAT public network address and said NAT public network media port to said user side;
4. The network access method of claim 3, further comprising: After binding the private media channel with a user public network transmission resource corresponding to the user side to obtain a media link between the user side and the target platform, the method comprises:
The network access method according to any one of claims 1 to 4, further comprising performing dtls negotiation with the user side in response to a data packet transport layer security protocol dtls negotiation request sent from the user side. Prior to said step of establishing a private media channel between said user side and a target platform, said method comprises:
forwarding the user media negotiation information to the target platform according to the user media negotiation information on the user side sent from a signaling gateway;
forwarding the target media negotiation information to the signaling gateway according to the target media negotiation information sent from the target platform; transmitting the target media negotiation information to the user side by the signaling gateway; completing media negotiations between and the target platform;
further comprising
The network access method according to any one of claims 1 to 4, wherein the user side communicates with the signaling gateway via a browser, or the user side communicates with the media gateway via a browser. . A network access method applied at the user side, comprising:
running a default browser and communicating with a signaling gateway via said browser or said user side communicating with a media gateway via said browser;
establishing real-time media communication with a free agent of the target platform via the browser once the media link between the user side and the target platform has been established;
network access methods, including a media gateway,
at least one processor;
a memory communicatively connected to the at least one processor;
with
7. Instructions executable by said at least one processor are stored in said memory, said instructions being executed by said at least one processor to cause said at least one processor to execute the command according to any one of claims 1 to 6. A media gateway that can run any network access method. an electronic device,
at least one processor;
a memory communicatively connected to the at least one processor;
with
Instructions executable by the at least one processor are stored in the memory, and the instructions are executed by the at least one processor so that the at least one processor can execute the network access method of claim 7. Electronics. A computer readable storage medium storing a computer program,
A computer readable storage medium which, when executed by a processor, implements the network access method according to any one of claims 1 to 6 or the network access method according to claim 7.

Images